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(No Mdel.)

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J. P. SOHERBER.

ZINOOGRAPHIG PRINTING'MACHIN.

Fiyi Patented May 3, 1887,

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(No Model.) 2 Sheets--Sheet 2.

J. P. SGHBRBER. ZINGOGRAPHIG PRINTING MACHINE.

Patented May Y3, 1887. 71E/9.1%.

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lUNITED STATES vPATENT OFFICE.

JOHN F. sOHERBFR, OF BUFFALO, NRW YORK, AssreNOR OF ONF-FOURTH To HARRY e. ZELL, OF sAME'PLAoF.

ZINCOGRAPHIC-PRINTING MACHINE.

SPECIFICATION forming part of 'Letters Patent No. 362,320, dated May 3, 1887.

Application 'tiled April 24, 1886.

To all whom it may concern: Be it known that I, JOHN F. SOHERBER, of the city of Buffalo, fin the county of Erie and State of New York, have invented a new and useful Improvement in Zincographic-Printing Machines, of which the followingisaspecication.

This invention relates to an improvement in that class of printing-presses which contain a 1o form-cylinder and an impression-cylinder.

The object ot' my kinvention is to adapt this kind of presses to zinoographic printing; and my invention consists to that end of the improvements which will he hereinafter fully set forth, and pointed out in the claims.

In the accompanying drawings, consisting of two sheets, Figure lis a side elevation of a printing press provided with my improvements. Fig. 2 is a longitudinal vertical sec- 2@ tion of the same. Fig. 3 is a side elevation of the impression-cylinder. Fig. 4 is a side elevation of the movable gear-segment; Fig. 5 is a vertical cross-section in line :o Fig. 3, on an enlarged scale. Fig. 6 is an inside View Of 2 5 one of the bearings in which the impressioncylinder is journaled. Fig. 7 is a fragmentary horizontal section of the gears connecting the impression and form cylinders. Fig. 8 is a cross-section in line y y, Fig. 2. Fig. 9 is a 3o sectional plane view in line z 2 Fig. 2. Fig. 10 is a fragmentary perspective view of the adjustable end of the zinc plate. Fig. 11 is a side elevation of the damping-rollers. Fig. 12 is a fragmentary sectional elevation of the ring secured to the gear-wheel of the formcylinder. Y

Like letters .of reference refer to like parts in the several figures.

A represents the frame of the machine, B

4o the impression-cylinder, and C the form-cylinder.

b represents the feed-board, and b the raised impression-segment formed on the impressioncylinder. The latter is provided with grip- 4 5 pers Iin the usual manner.

c represents one of the bearings in which the impression cylinder is jonrnaled. This bearing is secured in a standard, A', formed on the frame A, and is provided on the inner- SerialrNo. 200,030. (No model.)

side of the standard with a cylindrical collar, 5o l c', having a recess, c2, on the side which faces the form-cylinder.

4 D represents the gear-wheel secured to the shaft of the impression-cylinder, and meshing with a similarwheel, E, secured to the shaft of the form-cylinder. The wheel E is driven by a pinion, E'.

F represents a movable gear-segment forming part of the gear-wheel D and made movable toward and from the shaft of the impres- 6o sion-cylinder.

f represents guides or ways secured to the gear-wheel D, and in which the movable gearsegment F slides.

f is a hand-lever, pivoted to the arm d Of the gear gvheel D at f2, and attached to a shank, f3, which extends inwardly from the segment F.

g is a tail-piece formed at the inner side of the shank f3, and entering the recess o2 ofthe 7c bearing c when the segment F is moved inwardly out of line with the teeth of the gearwheel D, as represented in Fig. 1. In this position of the segment F the tail-piece g locks the impression cylinderB and prevents it from 7 5 turning.

g is a spring interposed between the shank f3 and the hub of the gear-wheel D, so as to force the segment F outwardly. The radial movement of the segment F is limited by a 8O slot, g2, formed in the shank f'f, and a bolt, g3, passing through said slot and secured in the arm d of the gear-wheel D. The gear-segment F is locked in its retracted position by the leverf being placed behind a stop, g4, formed 8 5 on the arm d. The lever f has sufcient lateral play to permit it being engaged with or disengaged from the stop 9*.

The gear-segment F is provided at one side with a circular segment, lz, which bears against 9o a ring, h', secured to one side of the gear-wheel D of the form-cylinder, so that when the segment h bears against the ring h the teeth of the segment F are prevented from meshing with the teeth of the gear-wheel E. The ring h is provided with a recess, h2, which admits the segment h, and permits theteeth of the segment F to mesh with the gear-wheel E. By

this means the form-cylinder can be disc-onnected from the impression-cylinder, and can be rotated independently of the same. Vhen it is desired to gear the two cylinders together, 5 this can only be accomplished when the recess h2 registers with the segment h, thereby insuring the proper register of the two cylinders.

I represents a zinc plate from which the impression is taken, and which is secured to the 1o form-cylinder C. The design is produced upon this zinc plate in t-he manner usually practiced in zincography. The zinc plate I is rigidly secured at one end to the form-cylinder by a clamping-plate, z', and bolts i. The opposite I5 end of the zinc plate is adjustably secured to the form-cylinder, so that the plate can be tightened or stretched on the same. This adjustment of the plate is effected by adjusting screw-bolts j and clamps j', which are secured 2o to the end ofthe plate I, the clanipj hooking over metallic strips ji, secured to the end of the plate by bolts js, as represented in Figs. 2 and l0. The screw-bolts j3 pass through lugs jt, secured to the arms of the form-cylinder C,

and are tightened by screw-nuts.

K K represent the damping-rollers, which supply moisture to the zinc plate I. The rollers K are arranged on the lower descending side of the form cylinder, and receive the 3o moisture from the intermediate roller, K'. The latter receives the moisture in turn from a movable roller, K2, which conveys the moisture from a reservoir-roller, K3, to the roller K'. The roller K3 revolves in a reservoir, Kt, which contains the moisture. The rollers K and K2 are preferably covered with felt, while the roller K' is preferably constructed of metal and the roller K of wood. The roller K2 is journaled in elbow-levers L, which are pivoted to .io the frame A at I, and provided at their opposite ends with rollers Z'. The roller K2 is held in contact with the roller K' by gravity or a suitable spring, and is swung against the roller K3 by a cam, m, secured to the gear-wheel D,

and a similar cam secured to the opposite end of the impression-cylinder, which cams engage with the rollers Z' as represented in Fig. 11.

Vhen the cams 'm release the rollers Z', the roller K2 returns to its former position and 5o conveys the moisture which it has taken from the roller K3 to the roller K'. The rollers K are capable of a movement concentric to the roller K', toward and from the form-cylinder, and are kept in rotation by the roller K', which 5 5 is driven in any suitable manner. In order to effect this movement of the rollers K, the bearings n of these rollers are arranged in slots u', curved concentric with the roller K'. These bearings a are connected by links a2 with 6o sliding rods N, which are operated by cams N',

secured to the shaft ofthe form-cylinder.

The cams N are so shaped as to force the rollers K back out of contact with the formcylinder, except when the zinc plate I passes these rollers, at which time the rollers are forced against the zinc plate by springs w3,

placed in the slots n'. By this means the zinc plate is damped every time it passes the rollers K.

O represents the inksegment, formed on the form-cylinder C diametrically opposite the zinc plate I.

P represents the ink-fountain,niounted in a movable carriage, p, arranged on the outer side of the form-cylinder. The ink-fountain is provided with a roller, p', which removes the ink therefrom.

p is a roller which conveys the ink from the roller p' to the ink-segment O. This roller is mounted in bell-crank levers q, which are pivoted on both sides of the carriage p and provided at their free ends with rollers, which are operated by cams q', secured to the formcylinder. The cams q' swing the roller p backwardly against the roller p a short time before the ink-segment reaches the roller 1f, and hold the latter in contact with the roller p sufficiently long to remove the requisite quantity of ink therefrom. Vhen the roller p2 is released by the cams q', it drops toward the form-cylinder and supplies inkA to the segment O.

p'represents the distributing-rollcrs, mounted in the carriage p above the roller p2, for distributing the ink on the segment O. The carriage p moves on inclined ways r, secured to the frame A, and is operated by rods R, secured to the carriage, and cams It', secured to the shaft of the form-cylinder.

S represents a cross-piece secured to the frame A in rear of the carriage p, and provided at its middle with a standard, S.

SZ is a spring attached adj ustabl y to the standard S by a set-screw, and bearing with its free end against the rear side of the carriage p, so as to hold thelatter against the form-cylinder. The carriage is moved away from the form-cylinder by the rods R and cams R. The cams R are so shaped that the carriage p is held against the form-cylinder when the inlrsegment O passes by the rollers p2 and p, and that itis held away from the form-cylindcr when the Zinc plate I passes these rollers.

T represents the ink-rollers, mounted in the frame A below the carriage p, in the proper position to take ink from the ink-segment O and apply it to the zinc plate I.

For starting the machine the impressioncylinder is disconnected .from the form-cylinder by means of the sliding gearsegment F. The form-cylinder is then revolved a number of times until the form has been properly damped and inked to produce a satisfactory impression. The two cylinders are then geared together by the segment F, and the paper is fed between the cylinders and the impressions are taken in an obvious manner. During the revolutions of the form-cylinder the ink is removed from the fountain and applied to the ink-segment O by means of the rollers p p2, and is distributed upon the segment by the rollers p. The segment transfers the ink to ICO IIO

th-ink-roilers p3, and the latter apply the ink to the zinc plate I after it has been damped by the rollers K.

I claim as my invention- 1. The combination, with the form-cylinder and the form secured thereto, of rollers having their journal-supports mounted in curved slots concentric with a distributing-roller and springs which force said journal-supports inward, thereby carrying the rollers toward the form, substantially as set forth.

2. The combination, lwith the form-cylinder provided with a curved Vzinc plate, of the stationary roller K, the movable damping-rollers K, having their bearings arranged in curved,`

slots n and provided With-springs n3, links n", rods N, and cams N', substantially as set forth.

3. The combination, Withthe form-cylinder provided with a gear-wheel, E, of an impression-cylinder provided with agear-Wheel, D, having a movable segment, F, substantially as set forth.

4. The combination, with the impressioncylinder and its gear-wheel D, provided with Ways f, of the gear-segment F, sliding in said Ways, substantially as set forth.

5. The combination, with the impressioncylinder and its gear-wheel D, provided with Waysf, and a stop, g, of the sliding gear-segment F and the loeking-leverf, substantially as set forth.

6. The combination, with the impressioncylinder and its gear-wheel D, provided with ways f, of the sliding gear-segment F, provided with the tail-piece g, and thebearing c, provided with a recess, c?, substantially as set forth.

7. The combination, with the impressioncylinder and its gear-Wheel D, having a movable segment, F, provided with a projecting guard-segment, 7L, of the form-cylinder having a gear-Wheel,E, provided with a guard-ring,

Yh', constructed With a recess, h2, substantially as set forth.

8. The combination, with the form-cylinder provided with a curved zinc plate, I, and inksegment O, of a movable carriage, p, provided with an ink-fountain and ink-supply rollers, whereby-the ink is applied to the ink-segment, and ink-rollers T, which take the ink from the segment, substantially as set forth.

9. The combination, with the form-cylinder provided with a curved zinc plate, I, and inksegment O, of the frame A, provided with Ways r, a carriage, p, moving on said Ways and provided with an ink-fountain Vand ink-supply rollers, a spring, S2, whereby said carriage is held against the form-cylinder, and rods R and cams R', whereby said carriage is moved from the form-cylinder, substantially as set forth.

Witness my hand this 13th day of April,

JOHN F. SGHERBER.

Witnesses: l CHAs. J. BUOHHEIT, CARL F. GEYER. 

